Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 211443
FWSDMX

SPOT FORECAST FOR BIRGE LAKE WMA...IOWA DNR
NATIONAL WEATHER SERVICE DES MOINES IA
943 AM CDT MON APR 21 2014

FORECAST IS BASED ON IGNITION TIME OF 0955 CDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

AN INITIAL OBSERVATION AT IGNITION AND A MID BURN OBSERVATION ARE REQUIRED...
PLEASE RELAY THEM TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN.

.DISCUSSION...
WINDS WILL CONTINUE TO INCREASE FROM THE NORTHWEST THROUGH THE
MORNING BEHIND A COLD FRONT WHICH HAS ALREADY PASSED THROUGH THE
AREA.  THERE IS LITTLE THREAT OF ADDITIONAL PRECIPITATION AS SKIES
CLEAR AND MIXING INCREASES QUICKLY THROUGH MIDDAY.

.TODAY...

SKY/WEATHER.........BECOMING MOSTLY SUNNY (25-35 PERCENT).
TEMPERATURE.........62 AT IGNITION...MAX 68.
RH..................60 PERCENT AT IGNITION...MIN 28 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 18 MPH INCREASING
                    TO 22 MPH LATE IN THE MORNING.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2100 FT AGL INCREASING TO 6400 FT AGL.
MIXING WINDS........WEST 16 TO 20 MPH INCREASING TO NORTHWEST 28 TO
                    36 MPH.
SMOKE DISPERSAL.....GOOD (38300 KNOT-FT) INCREASING TO EXCELLENT
                    (140000 KNOT-FT).
WIND (20 FT)........WINDS NORTHWEST AT 15 MPH AT IGNITION...
                    INCREASING TO 22 MPH LATE IN THE MORNING.


TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........38  32  18  12  10  8   6   6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............61  63  65  66  68  68  67  65
RH..............60  46  38  33  29  28  28  30
20 FT WIND DIR..NW  NW  N   NW  NW  NW  NW  NW
20 FT WIND SPD..18  21  23  22  22  23  23  23
20 FT WIND GUST.25  30  30  30  30  30  30  30
EYE LVL WND DIR.NW  NW  N   NW  NW  NW  NW  NW
EYE LVL WND SPD.13  15  16  16  16  16  16  16
EYE LVL WND GST.25  30  30  30  30  30  30  30
MIX HGT (KFT)...2.5 3.5 4.4 5.4 5.7 6.0 6.4 6.2
MIXNG WIND DIR..N   N   N   NW  NW  NW  NW  NW
MIXNG WIND SPD..36  35  31  28  28  29  30  30
HAINES INDEX....4   4   4   4   4   4   4   4

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT).
TEMPERATURE.........MIN 35.
RH..................MAX 89 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS 13 TO 22 MPH DECREASING TO 10 TO 12
                    MPH AFTER MIDNIGHT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6000 FT AGL DECREASING TO 300 FT AGL.
MIXING WINDS........NORTH 22 TO 30 MPH BECOMING NORTHWEST 5 TO 7
                    MPH.
SMOKE DISPERSAL.....EXCELLENT (125000 KNOT-FT) DECREASING
                    TO POOR (2100 KNOT-FT)
                    IN THE LATE EVENING AND OVERNIGHT.
WIND (20 FT)........NORTH WINDS 13 TO 22 MPH DECREASING TO 10 TO 12
                    MPH AFTER MIDNIGHT.

TIME (CDT)      6 PM      9 PM      MIDNGT    3 AM
SKY (%).........5         0         0         0
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TSTM COV........
TEMP............62        51        45        41
RH..............33        54        68        76
20 FT WIND......NW 22G30  N 16G20   N 12G15   N 10
EYE LEVEL WIND..NW 16G30  N 11G20   N 9G15    N 7G10
MIX HGT (FT)....6000      2100      300       300
MIXNG WIND......N 30      N 22      N 18      NW 10
HAINES INDEX....3         4         5         4

$$
FORECASTER...COGIL
REQUESTED BY...ANDREW HUCK
TYPE OF REQUEST...PRESCRIBED
.TAG 20140421.BIRGE.01/DMX



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